Display all images in folder

<?php

    //getFiles('./');

    function getFiles($dir) {

        $files = array_diff(scandir($dir), array('.','..'));

        foreach ($files as $file) {

            if (is_dir($dir . $file)) {

                getFiles($dir . $file . '/');
            }
            else {

                //echo $dir . $file . "<br />";

                $type = explode('.', $file);

                $type = $type[count($type) - 1];

                if ($type == 'jpg' || $type == 'png' || $type == 'jpeg' || $type == 'gif') {

                    echo '<image src="' . $dir . $file . '" />';
                }
            }
        }
    }

?>